Wabbler mechanism



Aug. 2, 1966 M. G. H. GIRODIN WABBLER MECHANISM Filed Oct. 24, 1963 INVENTO R GIRODI MARius e. H.

United States Patent 3,263,513 WABBLER MECHANISM Marius Georges Henri Girodin, 18-20 Place de la Madeleine, Paris, France Filed Oct. 24, 1963, Ser. No. 318,628 Claims priority, application France, Oct. 31, 1962, 914,040, Patent 1,345,734 6 Claims. (Cl. 74-60) It is known to pair the driving motor components and the compressor components driven by the same crankshaft for forming a single machine.

In a machine of this kind, generally known as a motor air-compressor, the power is transferred with the minimum of losses and load.

In conventional mechanisms of connecting-rods and crankshaft motors, the compressor cylinders are mounted either at the end of the driving cylinders with a crankshaft coupled up, or transversally to the driving cylinders.

For each of these arrangements, the increase of weight and space required is considerable.

The present invention obviates these disadvantages by creating a wabbler mechanism formed by a hollow central fixed knee-joint, or sphere, held integral with a supporting part, a spherical cover mounted on the aforesaid hollow sphere supports a movement conversion part, carrying, on the one hand, a hollow torus in which cavities are placed cooperating with the connecting-rod heads, and on the other hand, a toothed crown wheel cooperating with a second toothed crown wheel carried by the supporting part, whereas a crankshaft comprising a pin whose longitudinal axis passes through the centre of the hollow sphere, rests in a bearing integral with the front portion of the movement conversion part, this assembly comprising, in addition to the driving attachments placed on one side of the movement converter, compressor attachments placed on the other side.

Various other characteristics of the invention will moreover be revealed by the detailed description which follows.

A form of embodiment of the purpose of the invention is shown, by way of example, in the attached drawing.

The single figure shows, in section, the wabbler mechanism and relative arrangement of its components in an engine-compressor according to the invent-ion.

The casing 10 has, in its bottom 11, a bearing 12 in which rests the end 13a of a crankshaft 13 comprising an oblique pin 13b. A cover 14 contains a double albutment bearing 15 receiving the other end of the crankshaft 13. A hollow male sphere 22 is mounted on a part 22a, or annular caisson, fixed to the casing 10.

A movement conversion crown wheel 21 is centered on the hollow male sphere 22 traversed by the oblique pinned crankshaft 13.

The movement converter 21 having appreciably the shape of a truncated cone, comprises, near its large base, a torus 21a hollowed out and having cavities 21b for housing the connecting-rod heads, described hereafter. A toothed crown Wheel 24, fixed to the movement converter 21, is disposed in the central zone of this movement converter. These teeth 24 cooperate with a second set of teeth 25 carried by a truncated part 25a integral with the central portion of hollow caisson 22a.

The driving connecting-rods 26 are mounted on one side of the crown wheel 21, the receiving connecting-rods "ice 27 linked up to the compressor pistons 28 are mounted on the other side of said crown wheel 21.

It goes without saying that the driving cylinders 30, parallel to the rotation axis, or appreciably so, are on one side of the mechanism, and that the compressor cylinders 31, also parallel to the rotation axis, or appreciably so, are placed on the other side of the same mechanism.

According to another characteristic of the invention, the central male hollow sphere 22 of the movement is mounted on the part or caisson 22a of revolution, the receiving connecting-rods 27 traversing the latter. The compressor cylinders 31 are fixed on the caisson 22a.

When the gas to be compressed is injurious or detrimental to the mechanism, the receiving connecting-rods 27 are articulated on seal-tight crossheads 32 in guides 33, with interposition of auxiliary connecting-rods 27a, it being understood that this mounting is effected just as well if the compressor pistons 28 are double or single acting.

The operation of the motor air-compressor is as follows: the driving connecting-rods 26 acting on the movement converter 21, cause the crankshaft 13 to turn as in every piston-chamber motor utilizing the mechanism, but the power, instead of coming out :by the crankshaft, does so by the connecting-rods 27 actuating the compressor pistons 28. The flywheel 43 absorbs the instantaneous torque differences.

It goes without saying that in the case of an opposed piston engine, the motor air-compressor may comprise, according to the invention, two groups of cylinders, each group being arranged in relation to the corresponding movement converter.

I claim:

1. A wabbler mechanism, for a barrel type, multiple cylinder engine-compressor machine having a plurality of driving and driven piston-cylinder devices located symmetrically around the machine, comprising a tubular casing for supporting internally thereof and near one end a plurality of driving piston-cylinder devices parallel to the axis of the casing, an annular, hollow caisson secured to and extending said one end of the casing for supporting the driven piston-cylinder devices, a hollow sphere secured to said caisson and positioned partly within said one end of the casing, a crankshaft including an oblique pin, said crankshaft being journalled for rotation with its longitudinal axis passing through the center of said hollow sphere, said hollow sphere swivelly supporting a movement converting part including a truncated conic portion journalling said crankshaft pin and a hollow torus in which two series of oppositely directed cavities are formed, a toothed crown wheel carried by said movement converting part, a second toothed wheel cooperating with said first wheel and secured to said caisson, 'ball and socket elements forming universal joints seated in one of said series of cavities of the torus for connecting the piston rods of said driving piston-cylinder devices to said torus, and similar ball and socket elements disposed in said opposite series of cavities for connecting the piston rods of said driven piston-cylinder devices to the torus.

2. A wabbler mechanism according to claim 1 wherein said connecting rods secured to the pistons of the driven piston-cylinder devices traverse the said annular caisson.

3. A wabbler mechanism according to claim 1 wherein the cylinders of said driven piston-cylinder devices are fixed on the free outer edge of said caisson.

4. A wabbler mechanism according to claim 2, wherein said connecting rods which traverse the caisson are articulated in seal-tight cylindrical crossheads which slide in guide sleeves in said caisson.

5. A wabbler mechanism according to claim 1, wherein said crankshaft is journalled at its outer end in a bearing held in a housing integral with said caisson member.

6. A wabbler mechanism according to claim 1, wherein a fly wheel is mounted on said outer end of the crankshaft.

References Cited by the Examiner UNITED STATES PATENTS Dinzl 7460 X Neuland 7460 X Shaw 121-119 Girodin 74-60 DeWaern 7460 

1. A WABBLER MECHANISM, FOR A BARREL TYPE, MUTLIPLE CYLINDER ENGINE-COMPRESSOR MACHINE HAVING A PLURALITY OF DRIVING AND DRIVEN PISTON-CYLINDER DEVICES LOCATED SYMMETRICALLY AROUND THE MACHINE, COMPRISING A TUBULAR CASING FOR SUPPORTING INTERNALLY THEREOF AND NEAR ONE END A PLURALITY OF DRIVING PISTON-CYLINDER DEVICES PARALLEL TO THE AXIS OF THE CASING, AN ANNULAR, HOLLOW CASSION SECURED TO AND EXTENDING SAID ONE END OF THE CASING FOR SUPPORTING THE DRIVEN PISTON-CYLINDER DEVICES, A HOLLOW SPHERE SECURED TO SAID CAISSON AND POSITIONED PARTLY WITHIN SAID ONE END OF THE CASING, A CRANKSHAFT INCLUDING AN ABLIQUE PIN, SAID CRANKSHAFT BEING JOURNALLED FOR ROTATION WITH ITS LONGITUDINAL AXIS PASSING THROUGH THE CENTER OF SAID HOLLOW SPHERE, SAID HOLLOW SPHERE SWIVELLY SUPPORTING A MOVEMENT CONVERTING PART INCLUDING A TRUNCATED CONIC PORTION JOURNALLING SAID CRANKSHAFT PIN AND A HOLLOW TORUS IN WHICH TWO SERIES OF OPPOSITELY DIRECTED CAVITIES ARE FORMED, A TOOTHED CROWN WHEEL CARRIED BY SAID MOVEMENT CONVERTING PART, A SECOND TOOTHED WHEEL COOPERATING WITH SAID FIRST WHEEL AND SECURED TO SAID 